How to Pick Out Grease Seal for Trailer Hub

Published 07/10/2019

Question:

Hi , i am not to smart on grease seals. On my trailer the grease seal has a name and number. National 441320. do you have 2 that i could buy ? thanks

asked by: Joe K

Expert Reply:

While I wasn't able to find the seal number you mentioned I do have a solution that will allow you to pick out the correct replacement.

To pick out a replacement grease seal you will need to measure the diameter of the spindle where the grease seal rides with a digital or dial caliper and then need to measure the hub bore where the current seal rides. With those two dimensions we can pick out the correct seal that you would need.

I attached a link to a page that has all of the grease seals we carry. You will need to select your inner and outer diameter from the filters on the page and the correct seals will be listed.

expert reply by: Jameson C